Table 4
A multiple logistic regression model with multivariate adjusted odds ratios of pterygium for various risk factors
| Crude OR (95% CI) | p Value | Multivariate adjusted OR* (95% CI) | p Value | |
|---|---|---|---|---|
| *From a multiple logistic regression model that simultaneously includes all factors present. | ||||
| Sex | 0.84 (0.52 to 1.37) | 0.37 | 0.65 (0.41 to 1.04) | 0.08 |
| Age (years) | ||||
| 21–30 | 1.00 | 1.00 | ||
| 31–40 | 2.97 (1.20 to 7.34) | 0.002 | 2.79 (1.17 to 6.89) | 0.003 |
| 41–50 | 6.58 (1.95 to 22.10) | <0.001 | 6.36 (1.89 to 21.39) | <0.001 |
| 51–and above | 7.02 (2.14 to 23.02) | <0.001 | 7.31 (2.36 to 22.70) | <0.001 |
| Outdoor activity 10 years ago | ||||
| <5 hours/day | 1.00 | 1.00 | ||
| >5 hours/day | 2.04 (1.23 to 3.40) | 0.001 | 1.64 (0.96 to 2.80) | 0.02 |
| Smoking | ||||
| Never smoked | 1.00 | 1.00 | ||
| Ever smoked | 0.96 (0.57 to 1.60) | 0.82 | 0.46 (0.24 to 0.90) | 0.004 |
